/Engine/Plugins/FX/Niagara/Source/Niagara/Classes/NiagaraSystem.h
Computes emitter priorities based on the dependency information.
bool ComputeEmitterPriority ( int32 EmitterIdx, [TArray](API\Runtime\Core\Containers\TArray)< int32, TInlineAllocator< 32 >> & EmitterPriorities, const [TBitArray](API\Runtime\Core\Containers\TBitArray)< TInlineAllocator< 32 >> & EmitterDependencyGraph )